Line-narrowed fluorescence spectra and site-dependent transition probabilities of Nd/sup 3 +/ in oxide and fluoride glasses

Journal Article · Wed Nov 15 04:00:00 EST 1978 · Phys. Rev., B: Solid State; (United States)

DOI:https://doi.org/10.1103/PhysRevB.18.5799· OSTI ID:6504157

Brecher, C; Riseberg, L A; Weber, M J

The fluorescence spectra, branching ratios, and decay of the /sup 4/F/sub 3/2/ state of Nd/sup 3 +/ in glass were measured under excitation by tunable pulsed laser radiation. The following glass types were studied: silicate, phosphate, borate, fluoroberyllate, and fluorophosphate. Measurements were made at liquid-helium temperatures by exciting into the /sup 2/P/sub 1/2/ state, and line-narrowed fluorescence spectra were obtained as a function of excitation wavelength. Large variations in Stark splitting of the /sup 4/I/sub 9/2/ and /sup 4/I/sub 11/2/ states have been observed and attributed to site-to-site differences in the local crystal field. The probabilities for radiative decay and for nonradiative decay by multiphonon emission also exhibit variations with excitation wavelength. Although similarities exist, each different glass type shows its own distinctive patterns of variation in crystal-field splitting and relative quantum efficiency. In the fluorophosphate glass, which contains large numbers of both fluorine and oxygen anions, comparison of the laser-excited fluorescence spectra and lifetime of Nd/sup 3 +/ with the corresponding results from pure oxide and fluoride glasses demonstrates the presence of Nd/sup 3 +/ sites having both fluorine and oxygen nearest-neighbor coordination.

• Research Organization: GTE Laboratories, Inc., Waltham, Massachusetts 02154
• OSTI ID: 6504157
• Journal Information: Phys. Rev., B: Solid State; (United States), Journal Name: Phys. Rev., B: Solid State; (United States) Vol. 18:10; ISSN PLRBA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603 -- Materials-- Properties
657005* -- Theoretical Physics-- Optics
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMIC IONS
CHARGED PARTICLES
EMISSION SPECTROSCOPY
FLUORESCENCE SPECTROSCOPY
GLASS
IONS
NEODYMIUM IONS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SPECTRA
SPECTROSCOPY
STARK EFFECT